{"slug":"aiskills402-payment-header-d2f0337b","name":"AISkills402: Payment Header","summary":"Payment Header Check API: reads an x402 PAYMENT-SIGNATURE header before you send it - base64/UTF-8/JSON, version, authorization fields, clock window, who signed (lane a or b) and, with the seller PAYMENT-REQUIRED, payTo/amount/network/asset. Nothing is sent anywhere. $0.005 USDC per check. POST JSON {payment_signature, payment_required?}; free example at https://api.aiskills402.com/v1/run/payment-header-check/example","status":"live","headings":[{"slug":"calculators","title":"Calculators & converters"},{"slug":"payments","title":"Payments & checkout"}],"indexable":true,"listed_since":"2026-10-25T17:51:16.564647Z","sources":[{"source":"x402_bazaar","external_id":"https://api.aiskills402.com/v1/run/payment-header-check","owner_address":"0xbc0dcc70d8b5d85541d86ffc68d988fd59c22e68","seen_at":"2026-11-10T07:55:57.974820Z","removed_at":null}],"endpoints":[{"url":"https://api.aiskills402.com/v1/run/payment-header-check","host":"api.aiskills402.com","protocol":"x402","state":"live","last_probe_at":"2026-11-09T20:22:59.146543Z","last_ok_at":"2026-11-09T20:22:59.146543Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-aiskills402-com-62d86cc3","name":"api.aiskills402.com"}],"payment_options":[{"endpoint_url":"https://api.aiskills402.com/v1/run/payment-header-check","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"5000","pay_to":"0xbc0dcc70d8b5d85541d86ffc68d988fd59c22e68","observed_at":"2026-11-09T20:22:59.146543Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":4,"paid_calls_30d":5,"last_paid_at":"2026-11-01T12:49:57.867Z","reported_at":"2026-11-10T07:55:57.974820Z"},"assessment":{"method":"2026.10.2","checks":[{"id":"answers","state":"pass","reason":"Answered a check 4 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 15 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"4 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-11-10T00:23:03.362054Z"},"identity":{"endpoint_domains":["aiskills402.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}